Method of attaching heels to shoes



July 30, 1929. F. E. BERTRAND METHOD OF ATTACHING HEELS TO SHOES Filed Dec. 14, 1922 Patented July 3%, 1%29.

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FREDEBIG E. BERTRAND, F LYNN, MASSACHUSETTS, ASSIGNOR- TO "UNITED SHGE MACHINERY CORPORATION, 0F PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

METHOD 01E ATTACHING HEELS T0 SHOES.

Application filed December 14, 1922. Serial No. 606,880.

This invention relates to methods of making shoes and will be explained, for the purpose of illustration, by describingits application to the attaching of wood heels to womens 5 shoes, although in various respects the invention is not limited to the attachment of wood heels- In U. S. Letters Patent No. 1,615,258,

granted Jan. 25, 1927, on application of M. V. Bresnahan, there is described a method of temporarily attaching wood heels to shoes by passing a screw fastener through a hole in the rear end of a last in a shoe and through the heel-seat portion of the shoe bottom 1nto a heel to secure the last, the shoe and the heel together so that various operations can be performed upon the heel or the shoe without waiting for heel attaching adhesive to dry. In accordance with this method not only is 2 the heel securely held in place against the heel seat of the shoe during the drying of the ad- 1 hesive but the shoe and last are clamped together in such a manner that the last distributes the clamping pressure over the entire heel-seat portion of the shoe. Thus, thelatter is compressed between the heel and the last to conform the heel seat to the attaching face of the heel under pressure, thereby insuring firm seating of the heel and the pro- 3o vision of a tight joint between the shoe upper and the rim around the seat face of the heel.

In view of the foregoing, one object of' the present invention is to provide an improved method of attaching heels to shoes which, while retaining all the advantages of the Bresnahan method above referred to, will facilitate the attachment of heels without the employment of adhesive and which, in practice, will efi'ect further improvements in the 40 attachment of heels whether with orwithout the use of adhesive.

To this end, the invention,in one respect, provides for the attachment of a heel to a shoe by utilizing a fastening designed to remain in the shoe. as a permanent fastening,

and for the clamping of the last to the shoe and heel by a member engaging said fastening, and adapted to be withdrawn to permit the 'removel of the last from the shoe vwithout disturbing the attachment of the heel to the shoe. As herein exemplified, one of two separable members of a compound fastener is passed through a hole in the last without holding engagement .with the last and.

through the shoe bottom into the central portion of the heel attaching face of the heel to serve as apermanent heel fastening, while the other member is passed through the hole in the last and clamps the last to theshoe' and heel by holding engagement with the last and by detachably engaging the permanent heel fastening member. Thus, if it is not desired to employ hcel attaching adhesive, the last or the heel end portion of the last may be removed from the shoe without disturbing the attachment of the heel to facilitate the driving of heel attaching nails from the inside of the shoe into the heel, for example. At the same time, if adhesive be employed, any desired operations may be performed before the adhesive is dry, regardless of whether the heel end portion of the last is removed;

Moreover, the insertion of a permanent heel fastening into the central portion of the heel supplements the heel attaching nails and strengthens the permanent attachment of the heel.

The manner in which the above and other objects of the invention are secured will be apparent from the following description of the way in which one illustrative form of apparatus shown in theaccompanying drawings is used. in attaching a heel.

In these drawings v Figure 1 is a front elevational view showing part of a heel attachin machine of the type illustrated in United S ates Letters Patent No. 1,664,657, granted April 3,1928, upon my co-pending application and also special apparatus for use in connection with the compound fastener herein described;

Fig.2 is a side elevation partly broken away showing the drilling of a hole of predetermined depth in a heel Fig. 3 is a similar view showing the insertion of one of the above described permanent heel fastenings through a last into a heel,

Fig. 4 is a side elevation of the drillshown in Fig. 2;

Fig. 5 is a similar side elevation of a modified form of drill; p Figs, 6 and 7 are respectively top and side views of one of the permanent heel fastenings;

' Figs. Sand 9 are respectively a top and a sid; view of a modified form of fastening; an

' Figs. 10 and 11 are respectively top and bottom plan views of the separable part of the above described preliminarily clamped together by means fully illustrated and described in my above ident1fied Letters Patent. The heel is firmly supported by a tread plate, 10 and a vertically ad3ustable rear support 12 carried by a post 14 mounted on a table 16.

As shown in Fig. 2, while the last and shoeand heel are held preliminarily clamped as described, a drill is inserted through a hole passing through the rear end of the last and Y. is guidedby the hole in the last to drill a hole of predetermined depth through the heel seat of the shoe into the heel. The illustrated drill comprises a shank 18'clamped in a chuck 20 carried at the bottom of a fiexible drive shaft 22, the bottom end of the shank being formed into a cutting drill 24. A. sleeve26. isadjustably clamped to shank'18 bymeans- 1 of a set screw 28 and acts as a guide to direct duced top part 84 central threaded stem 36 (Fig. 11) on its the drill axially of the hole in the last. bottom of sleeve 26 serves as a shoulder to engage the top of the sole of the shoe to limit the operation of drill 24 in such amanner as to. form a'hole of predetermined depth. If the'isole is of very firm stock so that the head of the screw-does not readily crowd into it so i as to be flush with its upper surface, the hole made by the drill may be countersuhk by forming the bottom of sleeve 26 as a countersinking drill 30, as shown in Fig. 5.

' After the heel has been prepared by drilling a hole'asabove described, my improved two-part fastening device is 1nserted in the hole in the last This device comprises an upper part 32 having a driver-engaging re-= (Figs. 8 and 210) and a lower end. The stem 36 is arranged to seat in a threaded recess 38 formed in the head 40 of a permanent heel fastening such as a threaded screw 42. If desired, a slot 44 .(Fig. 8) may be formed in the head 40 of the screw so that the screw may be removed without undue difficulty if it is necessary to remove the heel. in repairing the shoe. he upper or driving part 82 and the screw 42 are threaded together when they are inserted in the hole in the last, and the head 34 is engaged by a power-driven screw-insertingimplement 46 constructed as described in my above identified'llietters Patent, The parts are held in the relative positions shown in Fig. 3 untilthe screw 42 is driven home with its head substantially flush with the upper surface of the sole of the shoe. In order to clamp the last firmly to the permanent heel fastening 42, a last clamping member 48 is threaded on the upper end of the shank part of the driving member 82 in such amanner than it may be turned down against the top of the last. Preferably a leather or the head 34 of the driving member 32.

The

' application,

menace other compressible washer 50 is provided. As shown in Fig. 1, ll prefer to provide an improved form of socket wrench including a manipulating handle 52 in which a wrench member 54 is mounted for turning movement,

The improved wrench may conveniently be I wrench member 54 is formed at its lower end to engage the sides of the last clampin member 48 and is provided with a cylindrical recess 66 to avoid the possibility of engag'liLplg e wrench member is also formed with an upwardly projecting head 68 of substantially the same -form as the head 34 to turn the last clamping member 48 firmly down against the top of the last; The last and the shoe and the heel having been firmly clamped together as shown in Fig. 1, various finishing or other operations may be performed upon the shoe as mentioned in the above described Bresnahan patent. Thescrew driving member 32 is then withdrawn by turning it in the reverse direction, whereupon the stem 36 and the member 32 separatev from the( recess 38 in the screw 42, leaving the fastening 42 permanently securing the shoe and heel together. Thereafter, the last may be removed from the shoe, the heel further-secured by inside nailing 1n the usual way if desired and further 'operations performed upon the shoe in any usual manner. v

i The improved fastening device described above is not claimed herein but is described and claimed in an application for United States Letters Patent Serial No. 288,626, filed June 27, 1928, as a diyision of the present While one method of procedure has been particularly described, it is not my intention to limit the scope of the invention thereby or otherwise than by-the appended claims when construed in the light of the prior art.

' Having thus described my invention, what ll claim as new and desire to secure by Letters Patent of the United States is 1. That method of making shoes which comprises the step of permanently securing a heel to a shoe and simultaneously"temporarily securing a last to the shoe and heel by means ofacompoundfastening having afirst portion to remain in the shoe as a permanent fastening and asecond and removable portion comprising a shank to pass through a hole in the last and a part to engage the top of the last to press the last and heel and shoe together. a

2. That method of making shoes which comprises the step of permanently securing a me p temporarily securing a last to the shoe and eel by means of a compound fastening having a first portion to remain in the shoe as a permanent fastening and a second portion to clamp the last temporarily to the shoe and heel through the medium of the first portion.

3. That method of making. shoes which comprises the step of permanently attaching a heel to a shoe on a last by a fastening passed through a hole in the rear end of the last, temporarily clamping the last to the shoe by means of a device engaging the last and said fastening, and thereafter disengaging said device from said fastening to permit withdrawal of the last from the shoe.

4. That method of making shoes which comprises the step of permanently securing a heel in place upon a shoe by a fastening, and temporarily securing a last to the-shoe and heel by clamping it to the fastening in such a manner as to leave the exterior of the shoe unobstructed.

5., That method of making shoes which comprises the step of securing a heel and shoe together by a member designed to remain in the shoe as a permanent fastening, and temporarily clamping a last in the shoe to the permanent fastening.

6. That improvement in methods of mak-' ing shoes which comprises the steps of attaching a heel and a shoe together by a fastening passed through a hole in the rear end of a last in the shoe without clampingthe last to the shoe, and thereafter, while the heel and v the shoe are maintained attached together, temporarily clamping the last to the shoe and heel by a. device engaging the last and said fastenlng. i

7. That improvement in methods of making shoes which comprises attaching a heel to a shoe by a fastening designed to serve as a permanent fastening and passed through a taching the heel to the shoe by a fastening passed through a hole in the rear end of the last without clamping the last to the shoe, and thereafter temporarily securing the last to said fastening.

. 9. That improvement in methods of making shoes which comprises attaching a heel. to

a shoe by a fastening passed through a hole in the rear end of a lastin the shoe without clamping the last to the shoe, and thereafter utilizing said fastening in temporarily clamping the last to the shoe and the heel.

In testimony whereof I have signed my name to this specification.

\ FREDERlG E. BERTRAND. 

